Both fans in this comparison support the same software solution for light customization. The ICUE program allows you to adjust RGB colors on each LED on the fan. This is a very useful feature that can help you create a nice ambiance inside or outside your computer case. Features

Keep in mind that high RPM could also mean high noise, although this is not the rule. Sometimes dust inside your computer case can cause your fan to rotate faster. Also, make sure your processor has enough thermal paste to dissipate heat properly. As mentioned prior, the blades can be optimized for air flow or static pressure. They both will generate airflow and static pressure to some extent. When it comes to static pressure RPM correlates directly to static pressure. The higher the RPM the static pressure will jump. This comes at the cost of noise. The speed of the Corsair QL fan ranges from 525 to 1500 RPM. In other words, if your computer components are too hot, the QL model will increase its speed up to 1500 RPM. The company says there could be an oscillation of ± 10% RPM when it comes to the maximum speed. flatter" and larger blades act like a finer screw, and it takes more turns, but pushes with more force

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The Corsair QL stands out in this section because of its innovative design and easy installation. The fan looks better from all angles than the LL model. However, when we start adding resistance to the fan, the table starts to shift. Any fan specification you see shows a volume of air (CFM or other) the fan can move when unhindered, in free air sitting on your desk. There is always some resistance. The moment I put an AF fan on my case, it is no longer capable of moving 63 CFM at 1650 RPM. It will move less. How much less? No way to know exactly without some precise equipment. Every case and environment is slightly different, but for the most part the volume is not substantially less. Your front grill provides some measure of resistance and the AF fan may only move 57 CFM at 1650 RPM. However, that is certainly more than the 40 CFM an SP120 can move at the same 1650 rpm. The SP fan is less affected by the resistance, but the airflow on the AF is still so much higher and it is the better choice. the reason some people use airflow fans on radiators is because the fin density is very low, so the airflow fan doesn't need much pressure to push air through it. (or pull)

Before investing in a fan, make sure it is compatible with your computer case. The Corsair QL and LL come in two different dimensions, 120mm x 25mm and 140mm x 25mm. The Corsair QL looks better from both angles, so you have more options when it comes to RGB light customization. due to conservation of energy, that mechanical work is converted into "pressure" pushing the screw forward For instance, Corsair LL’s speed ranges from 600 to 1500 RPM. In this case, the LL model can lower RPM to 600 when the load is low. But, the Corsair QL can lower it to 525, which is better for energy-saving and noise reduction.

High static pressure

for a radiator, you can use both fans as long as the radiator isnt too restrictive, due to the fact that radiators are not a solid piece of metal, air actually goes through them

To sum up, if you choose the Corsair LL, you have an extra device to set up. Therefore, the QL model prevails in this segment. As shown in the picture above, a duty cycle is how long the signal is turned on versus turned off. For instance, a duty cycle of 100% means the signal is always on. https://www.corsair.com/us/en/Categories/Products/Fans/RGB-%26-LED-Fans/iCUE-SP-RGB-ELITE-Series-Fans/p/CO-9050109-WW#tab-tech-specs think of it as each fin on a cpu cooler is a hdd and how the air gets pushed between it. the smaller the gap the harder it is to push and you loss air and bonuses out.

To assign lighting to your fans/strips, you then must select the Lighting Channel you wish to control on the left. The Corsair LL comes with an RGB lighting node core. So, after setting up the fan, you also need to set up the lighting node inside your computer. In other words, you need to find a proper space and establish a cable connection between the fan and node. https://www.corsair.com/us/en/Categories/Products/Fans/RGB-%26-LED-Fans/iCUE-QL-RGB-PWM-Fan/p/CO-9050098-WW NOTE: If you connect 6 QL fans and 4 RGB LED strips to the Lighting Node Pro, you will only be able to select and customize the fans in iCUE.